Hedeoma pulegioides

Species category

Weed

Common name

American false pennyroyal

Diagnostic characters

Planting unit

NutletNutlet:
A small, dry, indehiscent carpel of a fruit, usually composed of one quarter of the fruit with each enclosing a single seed (e.g. mints).

Shape

ObovateObovate:
Inverted egg shaped with apical end the broadest.

Size

  • Length 0.9–1 mm 
  • Width 0.6–0.9 mm 
  • Thickness 0.5–0.7 mm 

Color

Black, light brown, and mottled

Texture

GranularGranular:
Resembling or consisting of small grains or particles.

Other structures

Large V-shaped hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).

Identification notes

Mottled seeds are light brown with dark mottling.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Lamiaceae

Valid name

Hedeoma pulegioides (L.) Pers.

Synonyms

Cunila pulegioides L.
Melissa pulegioides (L.) L.
Ziziphora pulegioides (L.) Desf.

 Hedeoma pulegioides.  Nutlets with a large, V-shaped hilum.
Hedeoma pulegioides. Nutlets with a large, V-shaped hilum.